Woodworking device



Jun 3, 1941. w a. MAURER 2,244,426 I I woonwonxmc- DEVICE Filed Nov. 13, 1939 2 Sheets-Sheet 1 INVENTOR 519M MHURER.

A TTOKN' Y- June 3, 1941. s. MAURER W0 0DWORKING DEVICE Filed Nov. 13, 1939 2 Sheets-Sheet 2 /NVN7'0R. 517M. M90252. {Widow ATT DRIVE Y.

Patented June 3, 1941 STTES OFFICE W ()[DWORKING DEVICE Sam Maurer, Vancouver, British C'olurnbia, Canada 2 Claims.

My invention relates to improvements in wood working devices, which 'are particularly adapted for incising or indenting the surfaces of laminated wood panels and the like.

The object of the device is to provide means whereby incised or indented lines may be made longitudinally of the grain of the wood without fracturing or lifting the grain at the sides of the lines.

It has heretofore been proposed to use circular dies in incising machines wherein the dies are of a diameter of eight inches or more and in such machines the pressure required for the indenting is so great that the shaft carrying the die springs out of line with the result that the impressions are of lesser depth at the centre of the shaft than adjacent its ends. It is with the object of preventing this defect that the present device is designed.

The invention consists essentially of a table having one or more feed rolls and a stationary member carrying circular dies above said roll or rolls, as will be more fully described in the following specification and shown in the accompanying drawings, in which- Fig. 1 is a fractionated plan view of the invention.

Fig. 2 is a fractionated elevational view taken on th line 2i2 of Figure 1.

Fig. 3 is a fractionated sectional view taken intermediate its length. The table is slotted transversely at intervals of its length as at 3 to adjustably accommodate guides 4 which are adapted to align the material to be treated in its passage over the table. Journalled in the frames 2 below the table is a feed roll 5 which is driven from any suitable source of power, not shown, and at a suitable distance beyond the feed roll is a driven live roll 6 which serves to take away the material which has been fed through the machin by the feed roll. Forks 1 are provided in the side frames 2 which serve as journals for a press roll 8 extending lengthwise of the live roll 6.

In the upper portion of each of the side frames 2 parallel guides ID are provided, between which a slide II is mounted. Each of the slides is carried by a vertical screw I2 which is journalled at its upper end in the side frame and is fitted with a worm gear 13 at its upper extremity. The worm gears 13 are simultaneously rotated by complementary worms M, one only shown, secured at opposite ends of a transverse shaft l5 which is journalled upon the upper member of the side frames 2. The transverse shaft is squared at one or both ends as at It to receive a suitable crank or tool, not shown, by which said shaft can be turned to raise or lower the slides I I through the medium of the worm M, the gears 83 and the screws I2.

Extending between the slides and connected therewith is a transverse member or beam ll which serves as a support for one or more die carriers generally indicated by the numeral [8, see details in Figure 4. The die carriers consists of an L-shaped member l9 provided with a rectangular opening 20 to fit the beam ll, which opening is closed by a removable front plate 21 to facilitate the removal or addition of die carriers to the beam. The base 22 of the member i8 is slotted as at 23 and pivotally mounted under the base upon a pin 24 is a shoe 25 having a bottom wall 26 and side walls 21 between the front end of which a fixed pin 28 is fitted. The rear end of the bottom wall 26 is fitted with an upstanding bolt 29 which projects through the slot 23 and is fitted with a fly nut 30. A leaf spring 3i is provided between the bottom wall 26 and the base 22 of the member l8 to act against the bolt 29 and maintain the forward end of the shoe 25 and its pin 28 raised to the extent permitted by the bolt 29 and its nut 36.

Guides 33 are mounted upon the side frames 2 between the feed roll 5 and the live roll 6 and slidably mounted upon each of these guides is a bearing block 34 which is adjustable endwise by means of a screw 35 extending through a slotted plate 36 mounted on the side frame and secured in adjusted position by lock nuts 31. Journalled in the bearing blocks 34 below the level of the table l'is a saw arbor 38 having one or more keyways 39 and on the arbor a pair of saw collars 40 each having an edge trimming saw 4| is fitted. The collars and their saws may obviously be set to any desired spacing along the arbor 38 and by adjusting the lock nuts 37 the saws may be raised to project to any desired height above the table. It will be understood by the number of the members used becomes so great as to cause deflection on any shaft on which they may be mounted when said shaft is of sufficient length to extend across the standard panel of four feet in width. With incising members of three inches or less, the chord of the segment forced into the wood is so short as to reduce the downward thrust required to practical proportions. The annular member 66 is secured upon a sleeve 41 which is preferably fitted internally with roller bearings 48 and is mounted upon the pin 28 of the die carrier is. The sleeve 4'! is provided with a right and a left hand thread 49 and 5!] respectively, on opposite sides of the annular member 46 and any desired number of internally threaded incising members 46A and spacers 5i are secured onto the sleeve. The right and left hand threads 49 and 50 are obviously for the purpose of causing the annular members 46A to tighten towards the fixed member 46 as the material passes under them.

In the modification of the die carrier shown in Figure 5, the shoe 25 is provided with side walls 52, which are spread apart adjacent their forward end so that by reversing the position of each alternate die carrier I8 upon the beam I'I suificient annular incising members 46 and 46A may be used to incise material of the full width of the table.

In operating the device, th die carriers and their incising members are spaced according to a desired pattern. The trim saws are spaced to the desired width of panel and the machine set in motion and panels are run along the table. If it is found that the impression made by one die is slightly deeper than the others, the adjusting nut 29 is turned until the die is raised to the proper position, when the work is resumed. If a change in the thickness of material is to be made, the beam l1 and its assembled parts are raised or lowered accordingly by ro't'ating the transverse shaft l5.

What I claim as my invention is:

1. In a wood working machine having a table, a feed roll journalled beneath said table, a beam transversely carried above the table and a die carried by said beam, said die consisting of a freely rotating sleeve having an annular indenting member intermediate its length and having a threaded extension beyond said annular mem her, said threaded extension being adapted to receive other annular members in alignment with the first named annular member.

2. In a wood working machine having a table, a feed roll journalled beneath said table, a transversely mounted beam carried above the table and a die carried by said beam, said die consisting ofa freelyrotatable sleeve having an annular indenting member intermediate its length and having a threaded extension on one side of said annular member, and an internally threaded annular indenting member carried by the threaded extension.

SAM MAURER. 

